Initial project setup (node)

Dockerfile

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+FROM node:20-alpine
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci --only=production
+COPY . .
+EXPOSE 3000
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
+  CMD wget -qO- http://localhost:3000/health || exit 1
+CMD ["node", "server.js"]